Electric controller.



PATBNTBD APR. 28,1908.

R I WRIGHT ELECTRIC CONTROLLER.

APPLIOATION FILED Q01'. 11, 190e.

w MM u W W fw A-r-ra RNEY.

`the finger-holders, and to the' application thereto ot a magliette blow-out.

assumed to he yertieal.

UNITED sTATEs PATENT oFFroE.

.RUBN I. WRIGHOF CLEVELAND, OHIO, ASSIGNOR TO EU- 'TRIC CONTROLLER AND SUPPLY COMPANY, OF CLEVELAND, OHIO. A CORPORATION Ol." OHIO.

ELECTRIC CONTROLLER.

vinfested Apro 28, 1908. 190e. serial No.. 338,366.

siding' at Cleveland, inthe county ol Ouyahogay and State oi" Ohio, have invented or disf covered new end useful Improvements in Eleetrie Controllers, of whieh the following is nspeei'lieation. lily invention relates `generally to eleetrie controllers, but more 'pertieulerly to the oonstruetion olthe eontaet-arm, the linger, and

The eontaet orneI should be mechanically strong', and the .insulation between the erm proper and the finger holders should be of simplel shape and Well 1protested from the netion olz the nre. The Contact :lingers should be readily renewable so that they can be quickly and eesily replaced whenv Worn or burned.' rlhe design ol2 the arm should be such that a magnetie blow-out may be used on the etmtroller to nid in theextinguishment 1 of the are, partieuhirly at the point of the openingof the eireuit, and that dillerent types ol Contact lingers, sueh as brass or carbon, may be used.

Referring' to the drawings which form e part ol' this speeilieation, vFigure 1 is a Central section (one end. ol' the switch erm being in eleyationl ol a eontroller embodying' one lorm olI my invention; Fig'. 2, n broken-oil section ol" the eoutaet arm proper; Fig'. 3,;1 eross-seetion ol' the complete sn'iteh-arm slunyingl the manner ol' mounting the lingers and the linger-holder; Fig'. 4, a. broken-oil" plan olE a seeond l'orm of my invention; Fie'. 5, a side yiew thereof; Fie'. (l a seelion on the line (--t olliie. 5: and Fig. T, a View similar to File'. 1 but in tivo sections showing' another inmliliealion.

ltel'orrinel to Fig. l, 1 represent-s one side` ol' a eontroller frame or easing, which will be 2 is a forwardly projecting' boss, on which is the coil or winding il. In front ol" the l'rmne 1 and supported in any desired mannel', in a parallel relation thereto, is the slate or other insulating support lfor the eOneentrieally arranged eontaet-pla tes or buttons 5. rl`he ('ontroller or eontaet arm is mounted on the pin 7 in the projeelion 2 and hesrotm'y motion in a plane parallel to the frame 1. It is secured to the pin by the clip-screw 8.'

In Fig. 2, I have shown the Contact-arm f olf tht` nuts 32.

10 are provided with interlocking notches' and projections l1 to aid joint between the same.

The bar 9 has thereon at ach end the sleeve 12 and the washers 13 Composed of insulating material. The bnr has preferably a polygonal cross-section to prevent the parts mounted thereon from rotation. On eaeh sleeve 12 and between the washers 13 is the metallie linger holder 14'. bEach end of ea-eh linger holder is provided with the lower lugs-15, to which the fingers 16 are piroted,

in securing' a goed and the upper lugs 1 7 errying'" the rods 18 v to which are'secured one end of the spring 19,

the other end thereof being' attached to arms 2O of the lingers. The sleeves and lingerholders are heldin place on the bar 9 by the Washer 21 and the nut 22. One of the nfashers 13 may be integral with the sleeve 12, if desired.' The 'fingers 16 stand ,ope posite the. .plates 5 and are pressed in eontae t therewith by the springs 19.

It will be seen that nearly. all of the insulation is protected from the are by the lingen holders, whieh are elosed :1nd Continuous thrtnighout their length. The only insulation exposed to the are is the Washers 13, whieh eau be easilv renewed by the removal leeh linger-holder together with alllthe lingers, springs, shunting Wires, ete. ean be readily reinoyed in ense repairs lare needed and a new set substituted quicker than a single finger of the ordinary eontroller ean be exchanged for another. The lingerl1ol' 'le1s :tre insulated from the bar l) and the hub by simple shapes of insulation without the use of the usual smallbushings and washers.

rl`o the slate L l secure the iron lugs 24, which lie between the treme lend those parts of the plates 5, at whiehin'urious areing oeeurs, The lugs lie close to the framey 1 so as to reduce the air-gaps, and have projections Whiefh pass-through the slate 4 and to which the plates 5 :tre preferably'secured. On ene-roiZiner the blow-out eoilB the niagnetio lluX AWill be substantially as shown by the dotted lines on the right hand end of Fig. 1. As this flux passesvthrough the lingers and the plates 5, it will be ell'oetive, it olE cured in place in the same manner proper strength, to blow out any arc produced by the fingers opening the circuit at the ends of the plates 5.

Referring to Figs. 4, 5 and 6, the fingerholders 14 are arranged on the insulating bushing 12 between the washers 13 and seas the corresponding parts are arranged on Figs. 1 and 3. The fingers 16 are preferably of carbon and are sidable in the boxes 25 on the side of the finger holder. The spring pressed bar 26 lies on the outer ends of each pair of fingers. This bar presses the fingers 16 against the cont-act plates 5. The contact-arm shown by Figs. 4to 6 may be substituted for that shown on Fig. 1.

Referring to F ig, 7, there are two metallic finger holders at each end of the controller arm, the coil 27 being seated between them around the sleeve 12. One set of fingers 16 is pivoted to each holder 142, the terminals of the coil 27 being connected to the res ective holders bythe Wires 28. 29 is a b 0W- out horn seated on the bar 9at each end of the insulation and has a curved end pointed toward the fingers and contacts to aid in di-.

recting the magnetic flux which is shown in dotted lines. The-bloW-ou-t coil 3 of Fig. 1 isomitted When'the coils 27 are used.

In Figs. 1, 3 and 7 the finY ers are shown as connected to the finger holers by the Wires 23, Which shunt the pivots'of said fingers. The hub of the controller. arm is 'shown off-set from the arms 9 as shown in Fig. 2, to allow` the boring of the hole'tlierein Without cutting or weakening the bars and to allow the use of various types of contact devices or brushes.

Having claim is :f y

1. In a movable contact iingerfcarrier for electric controllers, the combination of a metallic bar, a hub cast thereon, insulating sleeves surrounding said bar toward either end, tubular finger-carriers surrounding said insulating sleeves, and contact fingers pivoted in said carriers. n 2. In a movable contact electric controllers, the combination of a metallic bar, a hub cast thereon, insulating sleeves surrounding said bar toward either end, tubular finger-carriers surrounding said insulating sleeves, and contact 'members iexibly mountedon said carriers.

3. In an electric controller, a controller;

tubular support for said described my invention what I 'magnetic circuit pass finger-'carrier for arm composed of a metallic bar, a hub cast thereon, said hub being offset at right angles to the length of the bar, and contact members flexibly mounted toward either end of said bar and insulated therefrom.

4. In an electric controller, a controller arm composed of a bar, a hub cast thereon, anda shaft seated in said hub, said hub being offset at right angles to the length of said bar in such manner that said bar is not cut by the hole in said offset hub.

5. In an electric controller, a controller arm, a sleeve of insulating material thereon,

a metallic tubular holder sleeved on said sleeve, and contact devices carried -by said holder readily removable means for securing said second sleeve on the' bar.

6. In an electric controller, a controller arm, a sleeve of insulating material thereon,

a metallic tubular holder sleevedon said sleeve, and contact devicescarried by the ends of said holder; said holder conducting the current from the contact device at one end of the holder to the remaining contact device at the op osite end.

. 7. In an e ectric controller, acontroller arm composed of a bar, contact devices, a tubular p sup ort for said contact devices sleeved on said bar,-whereby the said support is prevented from axial rotation and .readily removable means for securing said tubular support on said arm. f

8. In an electric controller, a controller arm composed of a bar, contact devices, va devices sleeved on said bar, and readily` removable meansfor securing said sup ort on said bar.

9. In a controler, a frame, a rotary contact arm, contact devices carried by the arm,

an insulating support between the frame and the arm, contact plates on said support arranged to be engaged by the contact de'- vices, .a lug secured to said su port and arranged close to said frame andp opposite one or more arcing points of said contact plates, and an electro-magnet arranged to have its through said frame, contact arm, and lug.

Si ed at Cleveland, this 2nd day of October .i1-i906.v

REUBEN I. WRIGHT.

Witnesses:

C. W. Coiis'rocn, C. Pra'rLa.

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